They get fired then. Work or starve. These are industries that Trump has said are necessary for the national defense. There are no sick-outs. No walk-outs. Show up for work or there's the door. And if the workers quit for any reason, even fear of Covid-19, then I doubt they qualify for unemployment.
"They get fired then".
Seems like I've hears that workers in low-wage jobs want to be fired, since they can get $15/hour equivalent on unemployment for the next 3 months due to the stimulus law passed by Congress. They'll reduce their employability, but I don't think they care.
That part of the law was a perverse mistake. Congress tried to undo the goof the next day, but I don't think it was a goof as far as the Democrats were concerned, and it wasn't undone. Now all the slackers want unemployment, because it pays them so well. Another way to ruin the US economy, and reduce Trump's chances of reelection with it if this travesty isn't Pinned on Pelosi's Posse.